Check Wizard's defense after Wall came back, they became a top defensive team and actually started beating elite teams with their defense.

It's not about his blocks or highlights, it's about his impact on the court. The way the team itself plays defense with him engaged. If you actually watched the games you would know. Lately he has been concentrating more on offense and scoring, but overall he is a great defender.

I wouldn't say Kyrie is "terrible" defender either, he just gets lost or overpowered at times, which is more an experience, strength and age issue and the crappy overall Cavs defense doesn't help either